Ireland flanker Chris Henry is expected to miss the remainder of the Six Nations after damaging knee ligaments last week.
The 28-year-old suffered the injury in Ulster's RaboDirect Pro 12 game against Zebre on Friday, with the FRU confirming that he will require surgery in order to correct the problem.
It is understood that Henry will undergo a four-week rehabilitation period, which is likely to rule him out of the remainder of the Six Nations competition.
Next up for Ireland is a clash against Scotland on Sunday.
